Method of splicing hollow cores



2 Sheets-Sheet l s tb {G I 4 INVEN/OR WM A TOR/V5 Yf Api-il 10; 1934.

E. w. B EBIE METHOD OF SPLICING HOLLOW CORES Original Filed Aug. 8, 1930 A ril 10, 1934. E. w. BEBIE METHOD OF SPLICING HOLLOW CORES Original Filed Aug. 8, 1930 2 Sheets-Sheet 2 INVENTOR A TTORNE Y5:

iatented Apr. 10-, 1934 UNITED; STATES PATENT OFFICE.

METHOD OF SPLICING HOLLOW CORES Edwin W. Bebie, Hawthorne, N. J., assignor to International Paper Company, a corporation of New York 2 Claims. (01. 93- 94),

This invention relates to the splicing of hollow cores, and particularly those which are adapted to have wound upon them the paper web or sheet from a paper making machine, to form such paper into rolls, which rolls, through the medium of the hollow cores furnished with metal end caps, are mounted in printing machines and rotated so as to unwind the paper.

These cores, which are made usually of paper, strawboard, or similar material, are a half-inch or less in thickness, and are cut from longer lengths to the different sizes required for the difierent widths of paper to be wound upon them; and in the cutting or" these lengths to size, there is considerable waste in the sections left, after cutting, which are too short for use.

It is the object of the present invention to make use of these short waste lengths or core sections, by splicing or connecting them together to make up core structures or" the proper lengths; and a further object of the invention is to increase the length of cores which have already been equipped with core caps, without the necessity of removing said caps.

With these and other objects in view, the invention consists of the improved method, in which sections of hollow cores are acted on at their ends so as to enlarge the end of the bore of one section, and reduce the diameter of the end of the section to be connected, thereby adapting the reduced end of one section to be fitted into the enlarged bore of the other section, so as to effect the connection of the two; and in the application of the invention in the lengthening of cores which have already been equipped with core caps, and without the necessity of removing the caps, the capped core is first severed transversely, and a third core section is provided, and the ends of the several sections are shaped to enable them to be interfitted as above explained, so that by applying adhesive to the interfitting ends, or by otherwise providing for their union, the several sections may be connected into a unitary core structure of increased length.

In the specification to follow, the invention will be described in detail, and the novel features thereof will be pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is a front elevation of so much of a machine suitable for practicing the improved method, as will be necessary for an understanding of the present invention;

Fig. 2 is a top plan view of the same;

Fig. 3 is a longitudinal secton of two core sections, showing the same after being operated on by the machine of Figs. 1 and 2, to adapt them to be connected together in accordance with the present invention;

Fig. 4 is an elevation of the completed spliced core structure;

Fig. 5 is an elevation of a capped core which is to be lengthened in accordance with the invention, without removing the caps;

Fig. 6 is a longitudinal section through the severed sections of the core of Fig. 5, and through the intermediate core section which is to be set in between the severed sections, with the said sections separated from each other, and showing the adjacent ends of said sections after being operated onto adapt them to be connected into a unitary lengthened core structure; and

Fig. 7 is an elevation of the completed lengthened core structure after the separated sections of Fig. 6 are connected together.

Referring to the drawings:

The improved machine comprises as its main features, two rotary cutters l and 2 (the cutter 1 for making the cut in the bore of one core section to enlarge said bore locally, and the cutter 2 for making the cut in the exterior of another core section to reduce the diameter of said core section locally) a slide 3 associated with the cutter l, and on which one core section is supported and rotated and fed transversely of the cutter after being seated at its end around the cutter so as to surround the same; and a slide 4 associated with the cutter 2, and on which another core section, that to be connected to the first, is supported and rotated and fed transversely against the cutter, after first being positioned with its end in transverse alinement with the cutter.

The core section operated on by the cutter 1 to give the internal cut in making the mortise in the end of the core section, is in its position surrounding the cutter, supported on two core supporting rolls 5 and 6 which are rotatably mounted on the slide 3, and are driven by a belt 7, receiving its motion from a suitable source of power. These rolls are disposed with their axes extending parallel with the axis of the cutter and symmetrically on opposite sides of the latter, and in such relation to the cutter that the core section A supported on said rolls will have its axis coincident with the axis of the cutter, and consequently the end of said core section may be passed over the cutter so as to surround the same.

The cutter 1 is rotated by a belt 8 receiving its power from the same source of power driving the supporting rolls 5 and 6, and the core section surrounding the cutter is fed laterally so that the cutter will eat into its inner surface, and thereby enlarge its bore, by a lateral feeding movement of the slide 3, which is effected, as shown in Fig. 2, by means of a slide operating hand lever 9.

The core section B operated on by the cutter 2 to give the external out to form the tenon on the core section, is supported by suitable'supporting confined to the connecting of the spliced sections rollers 10 and 11, which are mounted for rotation on the slide 4 and are rotated by a driving belt 12 receiving its power from the same source of power driving the rolls 5 and 6; and the core supported by these rollers has its end surrounding and centered by a centering roller 13 mounted on the slide 4, the axis of said roller 13 being disposed midway between the axes of the two supporting rollers 10 and 11. The cutter 2 is rotated by the belt 8, and the centered rotating core section is fed laterally against the cutter by moving the slide 4 laterally by a suitable operating hand lever 14.

The mechanism above described is more fully illustrated and described in my co-pending application filed August 8th, 1930, Serial No. 473,804, of which the present application is a division, and while I have herein shown and described sufficient details of said machine for a proper understanding of the present invention, reference may be had to said parent application for a fuller understanding of the machine therein disclosed, than I have here given.

By the operation of this mechanism on two hollow core sections A and B, which are to be spliced or connected together, an internal recess 5, (see Fig. 5) will be formed in the end of core section A, whereby the bore of said section will be enlarged locally, and an external recess 6 will be formed in the core section B at its end, whereby the diameter of said section will be reduced locally,

*- the effect being to form a mortise in the end of one section, and a tenon on the end of the other section to seat in the mortise. A suitable adhesive is now applied to the mortise and tenon, and the latter seated tightly in the former, with the result that the two sections will be connected into a single unitary core structure, as shown in Fig. 6.

The method of splicing just described is that employed in the use of the machine in connecting together shorter core sections which have been discarded as too short for use, in order to utilize these short sections (which would otherwise go to waste) in the making of core structures of lengths to have paper webs or sheets of various widths coming from the paper machine wound thereon.

The machine may be employed also in carrying out my improved method of lengthening cores, such as shown at C in Fig. 5, which have already had core caps 0 applied to the ends thereof, to adapt the core, as usual, for mounting and driving the paper rolls in a printing machine.

To lengthen such cores without taking off the end caps, or either of them, the capped core is first severed transversely, as indicated by the dotted line 0, and the severed ends are operated on in the manner above described, so as to form a mortise c in one of the severed sections, and a tenon c on the other section, as shown in Fig. 6. A third and shorter core section D is provided, whose diameter is the same as the severed core sections, and the ends of this section D are operated on to form a mortise d in one end to receive the tenon c and a tenon d on the other end to enter the mortise c and adhesive being applied to the several tenons and mortises, they are fitted together, as shown in Fig. 7, thereby producing a lengthened unitary capped core structure.

It will be understood that the invention is not together by an adhesive, since other methods of effecting the permanent and secure connection of these interfitting spliced sections may be resorted to.

While inthe foregoing description and accompanying drawings the invention has been set forth in the particular detailed form which has been found to answer in practice the ends to be attained, it will be understood that various changes may be made in the practice of the steps of the method, without departing from the limits of the invention. For instance, instead of feeding the supported core section up to the cutter, the latter may be fed to the core section as long as there is a relative feeding action between the parts which will bring the core section into engagement with the cutter. Also, the annular cut made in the core section, whether internally to enlarge the bore, or externally to reduce the diameter, may be a taper out instead of a cut as herein illustrated, where the walls of the cut extend parallel 155 of the methods set forth, except insofar as such limitations are specified in the claims.

Having thus described my invention, what I claim is:

1. The method of splicing sections of hollow cores in order to make up a core structure on which to wind paper rolls, which consists in passing the end of one core section longitudinally over a cutter to surround the same, and rotating said section while feeding the same transversely against the cutter to locally enlarge the bore of said section at its end, supporting a second core section with its end portion opposite a rotating cutter, and rotating said core section while feeding the same transversely against the cutter to form an annular external cut therein, and thereby tween their inner ends, providing a third hollow core section of a diameter corresponding to that of the severed core to fill in said space, shaping the ends of the several sections to enable them to interfit, applying the third section in the space between the severed sections with its ends interfitted with the ends of the severed sections, and fastening said interfitting ends of the several sections together to produce a unitary structure.

EDWIN W. BEBIE. 

